Size gauging device



S IZE GAUGING DEVICE Filed April 10, 1946 '1::- 52 INVENTOR.

Patented July 27, 1948 2,446,071" SIZEGAUGINGDEVIGE} I Willisi FayA1Ie1i;:Dayton, Ohio,zassignorator-The SHeffieldvCorporation, Dayton-Qhiona corpse rationrof Ohioa,

Application April 10; -1946,-seria1 N or 660,904" 7 Claims- (Cl. 73-375)This invention relates 'toxfgauging apparatusforzsimultaneouslyfigauging-an object at a numheriw ofdifierent'iocationsm One object of the invention isftlrprovisi-onof.

a gauging apparatusfifoi simultaneously checking mega-aging zthefldiameteri'iorr a iloieiinadifierenttransverse::=planesgtami':incorporating 'a plurality of": independentgauging element-s amounted for relative movement One, commonoarriervand-having independent connections itotdifferentgaugingdevices."

Arrothereobjectris ith'ez provisionaof': a; gauging v= apparatusrrofz-the "charactennmentioned in "which each ofthe";gaugingzxelefnentsris'nprovidedrwith'one::or;moreizgauging"orifice'srthat formlfluidleak-wagemathsptheiga'uging orifiesi be'mgl-inz-communi=' cationmvithpassage'sxthhtare connectediby pipes extendingsthrough.recessed-portions in the gauging elements.

Another:- object iszthez-provisionwof 5a gauging devicea'of T131191";character -menti-oned sadapted for gauging: gobj ectsficarri'edarby; asupport-son? which: thewgaugingwelements? ori'rcarrier-i 51s "=movablyrarrangedrai.

Another .object :is ithet'prouision; 5of: ;a -:ga1u ing apparatus forcheckingrzor;.gauging the diameter of a hole in an objectindifferentctransverse planese and incorporating .:means;wiorimovingithe gauging 18161131911135.3013 carrier-fin an axial directionsol-that it is rengagedwithl the obj ect; andmeans forrotating thecarrier about its'own axis so that" the l diameters :canr ha-compared'orwchecked in difierentfiiametricaldirecti0ns.- 5

Other! objectstand advantagesof'thednvention Willi beapparent from-etherfollowing description,- the' appended claims, and, the 'acoompanyingdrawing, iniwhich,

Fig. 11 vista, lsideaelevation partlylin,central V vertical rzsectionn-lthroughg a gauging'napparatus r embodying the present invention;

Fig. 52 isw-a side'elevatiomupartly. in: central vertical section,through lj-thewcarrierzaand the gauging element'sthatLare-movabiyarranged on the'ecarriery Fi'gaS issa vertical iSBGtiOIIMQfl the line:'3,3 of Fig: a1, showing the iower'aportion l-OfTthGJ carrier; w

Figt'i is a horizontal section on the 'Hner4-4 of Land: #1;

apparatusiare! adaptedatol, be monnecte'd; Referring .l moreparticularlylto :the; drawing; in

which the-tsameoreference numerals have been: applied; to liketparts in:t-l'ieaseveral NEWS; :1 0' 1 erallylgiesignatesia support havinganlupperstable is a otrthe zfiQW gauging devicesto 1 which-w: the ivaliousagflliidx pipese of: the, gauging":

2 portion- 1 l for holding the" article" to be gauged:

This support-is provided witli'verticalguide ipiates I2 and I3 whichguidea beam tliorupanddown movement, beam 1 4 being moved by *meansof-an hydraulic 1 cylinderm-or: "cylinders l5 suitaloly' mounted inthe'sup'port lfland eachoperating a i piston rod 16 which 4 issecured-to the lower-aside": of the beam; The beam: l-4causes theelevationlor: retraction of a carrier: I'l -shown -in-'Fig.-;2 whicitrholds a plurality of independently movable gaug ing elements. In'theformiof'theinventioneillus trated, the gauging elements"areadaptedtoentera hole'in' an object ito be checke'dn: This hole may,

for example, be thecylinder of an internal:com;

-bustion engine. The engine maybe: moved 'aiong: the table portion Huntil the hole is properlyu positioned overthe carri'erandafiuidpressure may then be supplied, under th'evmanuar'controii'ofitheioperator; to the pressure" cylinder: I5 to" cause i elevation of thebeam I l; thus raisingithe carrier to a predetermined"position and.causingsitito'v insert its several elements into the cylinder:

Each gauging element; *as shown, is a :block: 1

- preferably 10f metal; the: constructionshownpro: 25

viding curl-"of these" blocks: asp-indicated at; l8; d9,

enemies;- The blocklliyforrexampie,is provided with :a transverslyieX'tending". fluid, passage::;22, 1* communicatingatits opposite endswith gauging A nozzles 23 and 24; theouter surfaces of -which1are:

arranged tobevery SIightIYJSPaCBd away from* the-surface-of ,the object:to be gauged so that fiuid- -leakage-paths are provided between thenozzlestand the object. Thesizewofthese fluid leakage paths isdetermined bytqthe" size of the workpiece; whichthuscontrols theamount-10f airleakage that can take place-under pressureof: the lsupplied air; The fluid passage 22isadapted-for connection to a flowtube gauging device of the character disclosed in Patent/No, 2,254,259which includes a tapered -lgaugingwtubei containingna float the positionof which iS-an indicationot the i rate of fiow "offluid through thepassage 22, and out through: the two leakage nozzlesl--23t *and- 24. Airis supplied to' lower end of the :tapered; tube l underlconstantpressure maintained bya pressure regulating: valvea The passageeflas-shown in t Fig. 2, is in communication with an attachment 25; thepipe"-21" leading from this connection QXr-Q tending downwardly and passingthrough grecessedt-portions in the=gauging-elementstort blocks beiowtheblock lll'. These recessed pqrtionsearer;

indicated aseiliptical passagesrZQtand 13am Fig. 4.

The carrierxthat forms-the support andlmovingq means ionthe.severalgauginglelements191 blocks,- is f-ormedwof uppe and loWere p te;3-l a id: 3:

secured together by means of vertical rods 33, 34, 35 and 3B, the lowerplate 32 being fixed to a hollow shaft 38 which extends down through abearing sleeve 39 arranged in the beam M. The connection between theshaft 38 and sleeve 39 is such that the shaft can move axially and canrotate about its own axis. A spring 40 normally holds plate 32 and shaft38 in a raised position in respect to'the beam l4, but permits the beam14 to be elevated without correspondingly moving the carrier if theworkpiece does not permit the gauging elements to enter the hole to begauged.

Under such conditions the spring 40 will be compressed, and the relativemovement between the beam l4 and plate 32 will operate a microswitch Mso that the operator will be advised as by a signal or lamp controlledby that switch, that the gauging carrier has not entered the workpiecewhen it should.

The rods 33 to 36 inclusive are provided with spacing portions 43 ofsomewhat larger diameter than reduced-portions M, the reduced portions il entering grooves in the gauging elements, as shown in Fig. l. Thesegrooves are slightly larger than the transverse dimensions of thereduced portions M, so that some freedom of movement is permitted thegauging elements with respect to the rods in all directions transverseof the hole axis. The enlarged portions of the rods hold the gaugingelements spaced apart with respect to one another, but each gaugingelement can move withrespect to the rods, and quite independently of oneanother, so that each gauging element can center itself in the hole ofthe object to be gauged. Each gauging element is provided with segmentalcaring portions or strips, preferably of hard metal such as carboloy, asshown at 456, these carboloy strips being inserted in the outer parts ofeach gauging element, preferably 90 apart. The upper portions of thesecarboloy strips are chamfered as shown at 48 so that each gaugingelement can readily center itself and enter the object to be gauged whenthe carrier is moved upwardly from the retracted position shown.

Each of the gauging elements is provided with a transverse passage and apair of diametrically opposed gauging nozzles communicating with theends of its respective passage, and the pipe extending from the passageof one element leads downwardly through'the recesses or openings of thegauging elements beneath, the several pipes then extending axially downthrough the passage in' the hollow shaft 38 and communicating throughflexible tubes with the several individual flow tubes shown in Fig. 5 sothat the level of the floats of these flow tubes will compare thediameters at different points along the wall that is gauged, with thereadings obtained when an obiectof the exact required size is used.

The arrangement of the gauging elements, with recesses'or grooves forreceiving the spacing or locating rods, and with recessed portions forreceiving the pipes leading to the passages of several gauging elements,permits the passage in the gauging element through which air underpressure is supplied to the gauging nozzles to be a straight diametricalpassage, and permits the parts to be conveniently assembled anddisassembled.

When the gauging carrier is raised, the cylinder block or other objectto be gauged being in place on the support It, the reading of theseveral flow tubes shown in Fig. 5 can be readily obtained so that theoperator can determine whether or not the gauged part conforms to therequired tol- 4 erance conditions, and can determine the uniformity ofthe diameters in several axially spaced planes in which the readings aretaken. While the gauging carrier is elevated, the operator can thenrotate the entire carrier about its own axis so he can see if there isany out-of-round condition. A rotation of the carrier is caused when theoperator lifts upwardly on the handle 50 which is pivoted on a shaft 5|carried by the frame iii. Rigid with the handle 50 is a lever arm 52 andslidable along the lever 52 is a slide plate 53 having a pivotalconnection at 54 to a rack bar 55. The rack bar has rack teeth engaginga pinion 55 which is fixed to the lower end of the hollow shaft 38, asshown in Fig. 3. Rollers 5'! rotatably carried on pins 58 threaded inthe beam i 4 hold the rack 55 engaged with the pinion 56 and maintain ahorizontal position of the rack. The rack moves up and down with thebeam l4, carrying the slide plate 53 with it along the lever arm 52 sothat the-lever 50 can be moved by the operator at any time to causerotational movement of the carrier and the gauging elements about theirlongitudinal axes. I

It will thus be apparent that a hole in an object can be exploredcompletely and with precision, giving the operator an indication of thediameters of the object at different axially spaced locations, andshowing any out-of-round condition by rotating the carrier about its ownaxis to move the gauging nozzles annularly with respect to the object.Each gauging element adjusts itself independently of the others so thatthe'position of onegauging element will have no effect on the centeringaction of any other. Injury to the apparatus is prevented due to theyielding movements of the carrier permitted by the spring 40, if thehole in the object is small enough so that the gauging elements will notenter.

While the form of apparatus herein described constitutes a preferredembodiment of the invention, it is to be understood that the inventionis not limited to this precise form of apparatus, and that changes maybe made therein without departing from the scope of the invention whichis defined in the appended claims.

What is claimed is:

1. Gauging apparatus for checking the diamelements and adapted forconnection to fluid flow gauging devices, the pipe connected tothe fluidpassage of one block extending through the aperture of another block.

2. Gauging apparatus for checking the diameter of a hole in an object indiiferent transverse planes comprising a, carrier, a plurality ofgauging blocks mounted on said carrier for limited movementindependently of one another in any direction in a transverse plane andhaving cham fered hole entering ends, 'each block having a fluid passageand a pair of diametrically disposed gauging nozzles communicating withsaid passage and adapted for cooperation with the object to providefluid leakage paths, said blocks having apertures, and pipes extendingfrom the fluid passages of said blocks and adapted for connection tofluid flow gauging devices, the pipe connected to the fluid passage ofone block extending through the aperture of another block.

3. Gauging apparatus for checking the diameter of a hole in an object indifferent trans verse planes comprising a carrier having end members andguide rods connected thereto, a plurality of gauging blocks carried bysaid guide rods for limited movement independently of one another in anydirection in a transverse plane, each block having a fluid passage and apair of diametrically disposed gauging nozzles communieating with saidpassage and adapted for cooperation with the object to provide fluidleakage paths, said blocks having apertures, and pipes ex" tending fromthe fluid passages of said blocks and adapted for connection to fluidflow gauging devices, the pipe connected to the fluid passage of oneblock extending through the aperture of another block.

4. Gauging apparatus for checking the diameter of a hole in an object indifferent transverse planes comprising a carrier, a support for holdingthe object and mounting said carrier for axial movement, means formoving said carrier axially to engage it with the object, said carrierhaving a plurality of gauging elements mounted thereon for limitedtransverse movement independently of one another, each element having afluid passage and gauging nozzles communicating with said passage andadapted for cooperation with the object to provide fluid leakage paths,and pipes extending from the fluid passages of said elements and adaptedfor connection to fluid flow gauging devices.

5. Gauging apparatus for checking the diameter of a hole in an object indifferent transverse planes comprising a carrier, a support for holdingthe object and mounting said carrier for axial movement, means formoving said carrier axially to engage it with the object, means forrotating said carrier about its own axis, said carrier having aplurality of gauging elements mounted thereon for limited transversemovement independently of one another, each element having a fluidpassage and gauging nozzles communicating with said passage and adaptedfor cooperation with the object to provide fluid leakage paths, andpipes extending from the fluid passages of said elements and adapted forconnection to fluid flow gauging devices.

6. Gauging apparatus for checking the diameter of a hole in an object indifferent transverse planes comprising a carrier having end members fromthe fluid passages of said blocks and adapted for connection to fluidflow gauging devices, the pipe connected to the fluid passage of oneblock extending through the aperture of an adjacent block, a support forholding the object and mounting said carrier for axial and rotationalmovement, means for moving the carrier axially to advance it into theobject, and means for rotating the carrier about its own axis.

'7. Gauging apparatus for checking the diameter of a hole in an objectin difierent transverse planes comprising a carrier having end membersand axially extending rods, a plurality of gauging blocks mounted onsaid carrier for limited lateral movement independently of one another,

each block having a fluid passage and a pair of diametrically disposedgauging nozzles communicating with said passage and adapted forcooperation with the object to provide fluid leakage paths, said blockshaving apertures, and pipes extending from the fluid passages ofsaidblocks and adapted for connection to fluid flow gauging devices, thepipe connected to the fluid passage of one block extending through theaperture of an adjacent block, a support for holding the object andmounting said carrier for axial and rotationa1 movement, means formoving the carrier axially to advance it into the object, and a springbetween the carrier and the means which moves the carrier axially sothat the moving means can move without advancing the carrier if thecarrier is prevented from entering the object.

WILLIS FAY ALLER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,308,324 Bellard July 1, 19192,370,219 Aller Feb. 27, i945 2,393,246 I-Iallowell Jan. 22, 1946

